package com.lxyk.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @ClassName PaymentService
 * @Description TODO
 * @Author ZJL
 * @Date 2022/4/25 11:40
 * @Version 1.0
 **/
@Service
public class PaymentService {
    //成功
    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"paymentInfo_OK,id"+id+"\t"+"O(∩_∩)O哈哈~";
    }
    //失败
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })  //峰值3秒钟，超过出错，出错了就会调用兜底的方
    //需要一个兜底的方法
    public String paymentInfo_TimeOut(Integer id){
        int timeNumber = 3;
        try { TimeUnit.SECONDS.sleep(timeNumber);
        }catch (Exception e) {
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()+"   paymentInfo_TimeOut,id：  "+id+"\t"+"呜呜呜"+" 耗时(秒)"+timeNumber;
    }

    //兜底方法
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()+" 系统繁忙或者运行报错，请稍后再试,id：  "+id+"\t"+"┭┮﹏┭┮";
    }

    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),  //是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),   //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),  //时间范围
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id < 0){
            throw new RuntimeException("*****id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();   //等价与    UUID.randomUUID().toString()

        return Thread.currentThread().getName()+"\t"+"调用成功,流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数，请稍候再试,(┬＿┬)/~~     id: " +id;
    }
}
